This hypoallergenic mattress pad combines comfort and protection for worry-free sleep, filled with 100% polyester and featuring a waterproof reverse fabric. It has 3M Scotchgard treatment that wicks away moisture and makes stains easier to release, while the OEKO-TEX certification ensures it contains no harmful substances or chemicals, guaranteeing safe, quality comfort.Its deep pocket knit skirt stretches to fit mattresses up to 18 inches thick, and the classic diamond quilting adds a timeless look; for king size, the pad measures 78"W x 80"L x 14"D. It's also conveniently machine washable for easy care-plus, placing a fitted sheet over it helps keep the pad clean and prevents sliding or clumping at night.The pad comes efficiently compressed in one box for easy shipping; just unbox and unroll it, and it will expand to its original shape within 72 hours, making setup hassle-free. Material: Polyurethane.